What the authorities would do in most of the U.S. would be to crack down on the vendors. What I’d do if I were a vendor would be to give people an incentive to recycle. Put a bin beside the wagon and charge people a few cents extra for any wrappers or containers they take away from the wagon. They could then eat a snack right there and put the wrapper in the bin, pour a drink from the bottle into their own reusable bottle to take with them, or pay extra and dispose of their own garbage somewhere else.